g-olling-s



- (NoModel.)

2 Sheets-Sheet 1.

E. E. GOLLINGS. ROTARY PUMP.

Patented Mar. 17, 1891.

(No Model.) 2 Sheets-Sheet 2.

E. H. GULLINGS.

\ ROTARY PUMP.

No. 448,609. Patented Mar. 17, 1891.

mlm.. llllllllm-llllllllllll""Il"l||||||||| @Mx/mm NN N Wk@ -Mf- 'lllrvirny Sterns? aterra terreni ELLICK Il. GOLLINGS, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE GOLLINGS BI-OENTRIC PUMP COMPANY, OF SAME PLACE.

ROTARY PU [Vl P.

SPECIICATION forming part of Letters Patent N o. 448,609, dated March 17, 1891. Application filed December 14, 1889. Renewed January 8, 1891. Serial No. 377,173. (No model.)

To @ZZ whom t 71mg concer/t:

Be it known that I, ELLIcK H. GoLLrNes, of Chicago, in the countv of Cook and State of Illinois, have invented certain new and useful Improvements in Bicentric Rotary Pumps; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

, This invention relates to that class of rotary pumps (illustrated in the several prior applications for Letters Patent of the United States, Serial Nos. 301,675 and 315,250, filed by me March 1, 1889, and June 22, 1889, respectively) in which a concentricrotatin g shell contains and rotatesan eccentrically-monnted wheel having' radial. wings or an equivalent chambered construction, and in which water or other liquid to be pumped is supplied to and discharged from the interiorof the shell through an axial support for the rotating parts. In said several applications for patent it is set forth that the interior of the shell is divided (substantially in the plane of greatest eccentricit-y) into two compartments by the aid of certain movable parts, which operate as prolongations of the radial wings or division-walls of the chambered eccentricwheel, and that by the rotation of the shell and wheel the fluid to be pumped is admitted to one of these compartments and expelled from the other.

The present invention has for its object to provide a construction of the machine with respect to the movable prolongations of the wings on the eccentric wheel with a View to the division of the shell interior into two compartments.

The aocompanying` drawings illustrate the special improvement above referred to in connection with anotherimprovement, which corr sists in the provision of the inlet and outlet of one end of the machine, and which is set forth in another application for Letters Patcnt, Serial No. 333,766, filed by me simultaneously herewith.

Figure 1 is a vertical central section of the machine in theindirect linel lof FigZ. Fig. 2 is a transverse section in the line 2 2 of Fig.

B B is a non-rotating shaft having concentric portions B B and an intermediate eccentric portion Bf One end of the shaft B Bis upheld and clamped in the socket-piece A", while the opposite end is sustained in a socket c, formed in a prolonga-tion c of the tubular casting C, which latter is in turn sustained by having a flange cZ thereon bolted against the side of the frame-ring A2.

D is a rotating shell composed of the end plate d, the end plate D', and the rim D?, the latter being secured by bolts between the margins of the end plates l and D. The shellD rotates on the axis of the concentric portions of theV shaft B E. As illustrated in these particular drawings, the end plate CZ has a packed bearing at d', and also a roller-bearing at r upon the adjacent concentric portion D of the shaft B B. The head D has also a roller-bearing on the adjacent concentric part of the shaft atr, and ithas a packed bearing at d2 upon a cylindric part cS of the tubular casting C.

Gr s a symmetrical wheel mounted on the eccentric portion B of the non-rotatingshaft B B', said eccentric wheel being provided in the present instance with a roller-bearing r2. The wheel G is provided with a series of peripheral recesses g, separated by wings g of such length as to extend into contact or proximately into contact with the inner peripheral surface of the shell-rim D2 on the side thereot' toward which the eccentric B projects. At all other points, therefore, said wings will be at a distance or at a greater distance from said inner peripheralsurface of the shell. To provide for the prolongation of the wings g',

so that passage for fluid may be cut off between the shell at the point most remote from the eccentric wheel and the adjacent wing of the latter,I employ a series of movable parts F, which are here shown and are desirably made in the form of cylinders or rollers.

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Said rollers l till the lateral space between the parallel marginal portions ot` the opposite end plates l D of the shell, and have gudgeons f at their ends, which project into slots j", formed in the parallel faces of .the said end plates at a distance from the inner periphery of the rim I)r2 suitable to allow the cylindric surfaces et' the rollers to bear against such periphery. The slots f are of such length that in the simultaneous rotation of the shell and the eccentric wheel by pressure or" the ends ot two opposite slots against the gudgconson oneof the rollers and pressure et" the roller thus supported against the adjacent wing g', as shown at the bottom of Fig. 2, the other rollers may adjust themselves to a position between the wings on both sides of them severally without; binding or undue pressure against the extremities of the slots.

Then the parts I? are cylindric, they are desirably ot' a diameter equal to or greater than twicethelength ot' space between the shell and the end ot' the wing o most remote from the shell; but itsaid movable parts be made in other than cylindric form-as, for example, rectangular-it is only necessary that they be of sutcient width radially ot the shell to cover and close said space.

In Fig. 4 the rim l)2 ot the shell is shown as having transverse depressionsd'l, the parts of which will be occupied by the rollers when their gndgeonsfare in contact with the rear ends of the slots f. '.lhis the position ol the roller when concerned in imparting motion to the eccentric wheel from the shell, and substantially the positionot the roller when in contact with the wing of the cecentric wheel most remotei'rom the shell. In the construction described centrifugal action upon the rollers will therefore tend to bring them into these working positions al'ter being moved out of such positions by contact with the wings during other portions ot' their revolution.

lVith the shell and eccentric wheel hereinbefore described onlyone chambered head or end plate D is here shown, and in combination therewith a single tubnlaraxial support C, having both inlet and outlet passages r1 c5; but, if desired, the pump may have a chambered head D at each end, and in connection therewith a hollow axial support maybe employed at each end of the machine, so as to l receive at one end and discharge at the other, as shown in both my said prior applications for patent.

Briefly describing the construction of the chambered head D and the tubular support C, as the same have already been fully described and claimed in the application for patent filed simultaneously herewith, I point out that said head or end plate D is provided with a series of passages p, separated by radial webs (Z3, corresponding in number with the number of wings g of the eccentric wneel,

cascos and that opposite webs di; coincide with opposite wings g in the plane of greatest ec` centricity, so that the division ot the shell extends to the interior ot the chambered head D also. The projection c has its end also in the same plane as seen in Fig. 3, and of such length as to reach into contact or close proximity with said opposite webs d. In the construction illustrated this stationary or non-rotating projection c is a continuation of a partition C', formed in the tubularsupport C, for the purpose of affording inlet and outlet to and from the shell at one and the same end of the machine.

In the arrangement here shown the plane ot greatest eccentricity is horizontal and the direction ot motion is that indicated by the arrow in Fig. 2. The upper half of the machine is therefore the expulsion side andthe lower half the induction side thereof, and cL is the supply-passage and ci the dischargepassage of the divided tube C.

I claim as my inventionl. In a rotary pump ol' the general character described, the combination, with a rotating shell having suitable inlet and discharge passages, and with an interior eccentrically-supported rotating wheel provided with a series of peripheral wings, ol' a series of movable parts supported in contact with the periphery ofthe shell and engaged with said shell, while having a limited movement in a direction substantially parallel with the periphery of the shell and adapted to bear against the wings ot' the eccentric wheel.

2. In a rotary pump of the general character described, the combination, with the rotating shell having suitable inlet and outlet passages and with an interior eccentrically-supported rotating wheel provided with a series of peripheral wings,of a series of rollers supp orted in contact with the periphery of the shell and engaged with the shell, said rollers having a limited movement substantially at right angles to the wings of the eccentric wheel and being adapted to bear against said wings, substantiz'illy as and `for the purpose set forth.

3. In a rotary pump, the combination, with the shell, the end plates of which have slots f', and with an eccentric wheel provided with wings g', ot the series of rollers F, provided with gudgeons occupyingthe slotsf, substantially as and for the purpose set t'orth.

si. 'lhe rim D2 of the shell, provided with transverse depressions d", in combination with the eccentric wheel having wings g and the rollers F, substantially as described.

In testimony that I claim the foregoing as my invention I ailix my signature in presence of two witnesses.

ELLICK ll. GOLLINGS.

Witnesses:

M. E. DAYTON. TAYLOR E. BROWN.

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